<template>
    <div id="detail-nav-bar">
        <nav-bar>
            <div slot="left" class="back" @click="backClick">
                <img src="~assets/img/common/back.svg" alt="">
            </div>
            <div slot="center" class="title">
                <div v-for="(item,index) in titles" :key="index" 
                class="title-item" @click="titleClick(index)" 
                :class="{active:index === currentIndex}">{{item}}
                
                </div>
            </div>
        </nav-bar>
    </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'
export default {
    name:"DetailNavBar",
    components:{
        NavBar
    },
    data(){
        return{
            titles:['商品','参数','评论','推荐'],
            currentIndex:0
        }
    },
    methods:{
        titleClick(index){
            this.currentIndex = index;
            this.$emit('titleClick',index);
        },
        backClick(){
            this.$router.back()
        }
    }
}
</script>
<style scoped>
    .title{
        display: flex;
    }
    .title .title-item{
        flex: 1;
    }
    .active{
        color: var(--color-high-text);
    }
    .back img{
        margin-top: 10px;
    }
</style>